Soot blower for boilers



-Nov. 18, 1924- W. F. KEENAN. JR

i 3mm/MM Nov. 18, 1924- W. F. KEENAN. JR

soo'r BLOWER FOR BoILERs Filed Jan. 29 1921 3 Shasta-Sheet 2 Nov. 18,1924 W. F. KEEINAN` JR SOOT BLOWER FOR BOILERS 3 Sheots-Sheel 353 QM@Hom/wmf 'Filed Jan. 29

Patented Nov. 18, 1924.

UNITED STATES PATENT OFFICE.

WALTER F; KEENAN, JR., OF NEW YORK, N. Y., ASSIGNOR TO IOWER SPECIALTYCOM- PANY, OF NEW' YORK, N. Y., A CORPORATION OF NEW YORK.

SOOT BLOWER FOR BOILERS.

Application filed January 29, 1921.

To all -wzom 'it may concern.'

Be it known that l, VAL'LER F, Kur.- NAN, Jr., a citizen ot the UnitedStates, residing at New York, in the county and State of New York7 haveinvented certain new and useful Improvements in Soot Blowers forBoilers, of which the following is a fulh clear, and exact description.

The invention for which l now seek protection by Letters Patent is animprovement in soot blowers designed for use with boilers of a speciicform or type.

In the drawings hereto annexed Fig. l is a sectional view on line 1 1 ofFig. 3 of the special boiler to which the improvement is applicable.

Fig. 2 is a section of the same on the line 2 2 of Fig. l and Fig. 3 isa similar sectional view on the line 3 3 of Fig. 1.

The boiler which I have herein shown eX- cept for the specific form ofbattling employed is not of my devising and in itself forms no part ofmy invention, but as it is typical of those to which my improvement isespecially applicable it will be described so far as is'necessary to afull understanding of the present case.

The boiler has a large number of heating tubes A arranged in verticalparallel planes, and above the tubes are bea-ms B, suitably supported towhich are secured relatively narrow battle plates C parallel with theboiler tubes and with depending sides D. lVhere these battles arelocated two or more of the horizontal rows of boiler tubes A are at alower point and form open spaces and as these spaces are covered by thebattles the hot gases are thereby forced to flow up between theintermediate vertical rows of tubes. As the weight of the beams B withthe attached battles is not excessive, the beams may rest upon the bankof tubes and are secured in position by clips E which embrace a certainnumber of said tubes.

It is commonly known that all boilers are liable to collect soot andimpurities on the tubes from the hot gases which sweep them and in orderto prevent this accumulation interfering with the free transfer of heatI combine with tubes a novel form of soot blower which l shall nowdescribe.

Over the beams B and properly secured Serial No. 440,848.

thereto is a series of parallel tubes F provided with nozzles G, H7placed over alternate spaces between the vertical rows of tubes. Thisrequires every alternate tube .F to be provided with long nozzles Hwhich pass down through the battle plates C, while the other nozzles Gare short and lie directly over the spaces between tube rows. The longnozzles extend for the proper distance to bring them close to the tubesas shown in Fig. 1.

Above the beams B and the tubes F are supported a series of pipes Kwhich lead from a main supply pipe L and are provided with cocks orvalves M. Each pipe K has a right angled bend in order to allow forcontraction and expansion under varyingtemperature without impairing theconnections or interfering with their proper operation and each of saidpipes K is connected with one, two or more of the parallel tubes F so asto supply steam or air under pressure thereto.

Thenever it may be required by conditions of use, one or more or all ofthe valves M are opened to admit steam or compressed air to the pipes Kand this, passing to the tubes F, escapes through the nozzles Gr7 H, andcreates a powerful blast over the boiler tubes and removes any soot ordust that may have accumulated thereon.

In the boiler shown the number and dis-- position of the nozzles or jetsis adequate for the purpose intended and by the construetion describedample provision is made for all contingencies, such as expansion andcontraction which are met with in actual practice.

I am aware that soot blowers are not broadly new but my improvementresides in the special design and construction of the device which ishereinbefore set forth.

Vhat I claim is The combination with a boiler having a bank ofsubstantially parallel tubes having beams supported transversely abovethe same, certain of said rows of tubes being omitted at intervals toprovide open spaces in said bank, narrow inverted channel like battlesentirely supported b v the said beams and over thc open spaces in saidbank and vertically spaced from the tubes thereunder, ol' a plurality oftubes carried by said beams,

nozzles in sold tubes, Certain of said nozzles; being disposed betweenthe bellies and others being disposed n alignment therewith and extendeddownwardly through openings therein to points below the bottom of saidchannel buffles and valved wntrolled connections between .Suid nozzlesupplying tubes und a I nun supply of steam or Colnpressel zur sodeslgned as to compensate ,tor contraction and expansion.

ln testimony whereof l hereto o'lix my sign ntl 1re.

WALTER F. HIEENAN, JR.

